spaceship earth. spaceship earth user manual what does any planet need in order to sustain a large...
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Spaceship Earth
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Spaceship Earth User Manual
• What does any planet need in order to sustain a large diversity of organisms?
• What makes Earth so special in the Cosmos?
With a partner, write down as many planetary features as you can that support
and sustains life.
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What does life need?
• Clean Air (with oxygen a plus)• Clean Water (both fresh and salt)• Sunlight for photosynthesis and water cycle• Organic molecules• Ambient temperatures (not too hot or cold)• Cycling of nutrients
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The Story of Homo sapiens
Hunter - Gatherer Agriculture
100,000 Y.A. - PRESENT 10,000 YA - PRESENT
~10,000 YA
QUESTIONS: 1) How did both lifestyles interact with their environments?
2) What benefits could agriculture bring that hunting/gathering couldn’t?
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• H/G- – Killed wild game– Foraged for wild plants– Made shelters from natural
materials
• Agri-– Cut down forests to create
farm fields– Stored extra
• Farming can produce more food than that population needed
• Didn’t have to scramble for food on a daily basis
• Convenience!
What benefits could agriculture bring that hunting/gathering couldn’t?
How did both lifestyles interact with their environments?
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The Story of Homo sapiens
Agriculture
10,000 YA - PRESENT
~250 YA
QUESTIONS: 3) What benefits could industry bring that agriculture couldn’t?
Industrial
250 YA - PRESENT
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What benefits could industry bring that agriculture couldn’t?
• Wealth $$$• More stuff- technology, goods, services• Longer lifespan• Better transportation• MORE CONVENIENCE!!!
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“Home”
• http://www.youtube.com/watch?v=jqxENMKaeCU&feature=mv_sr
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But I love my modern life!
• Modern day, industrialized living uses a tremendous amount of NATURAL RESOURCES
• Agricultural societies use less• Hunter-gatherers tread even more lightly
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Ecological Footprint
• The total land area required for you to live the way you do
• Represented in acres or hectares
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What is a natural resource?
• With a partner….– Create a list of natural resources Americans need
to survive in the 21st century– Put a (*) next to any resources that can be
regenerated naturally (renewable)– Put a (^) next to any resources that can only be
used once and do not regenerate naturally (nonrenewable)
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Developed vs Developing
Developed• Wealthier• Slower population growth• Industrialized• Social Support Systems in
place• Higher ecological footprint
Developing• Not as wealthy• Higher population growth• Agricultural• No social support systems,
government instability• Lower ecological footprint
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The Environment and Society
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So what is the goal?
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Don’t break the spaceship!
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Sustainability
• Using resources in such a way that human populations can survive indefinitely.
• Now, our modern society is NOT sustainable– Environmental Science advocates for WISE USE of
resources– Learning about how Earth operates will prove how
reckless we are being as a species
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Good Terms to Know
• Natural Resource• Renewable resource• Nonrenewable resource• Sustainability• Law of Supply and Demand
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Exit Question
• The fundamental environmental issue isA. Air PollutionB. Water PollutionC. Loss of habitatD. Non-renewable resourcesE. Human population growth
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The Answer is…E. Human population growth
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